xsl-list
[Top] [All Lists]

Re: [xsl] Selecting everything "before" and "after" a specific node

2009-04-02 07:52:03
Paul Harvey wrote:
Hi,
I’ve searched and posted on another list, but have not found an answer to this 
problem…
I have XML like this...

<A i=”1”>
      <B i=”2”>
            <C i=”3”/>
      </B>
      <B i=”4”>
            <C i=”5”>
                  <D i=”6”/>
                  <D i=”7”>
                        <E i=”8”/>
                        <E i=”9” msg="get me out of here!"/>
                        <E i=”10”/>
                  </D>
                  <D i=”11”/>
            </C>
            <C i=”12”/>
      </B>
</A>
And I need to break it out into 3 nodesets, delimited by the <E i=”9” msg="get me out of 
here!"/> such that I’d end up with...
<ROOT>
       <BEFORE>
        <A i=”1”>
                  <B i=”2”>
                        <C i=”3”/>
                  </B>
                  <B i=”4”>
                        <C i=”5”>
                              <D i=”6”/>
                              <D i=”7”>
                                    <E i=”8”/>
                              </D>
                        </C>>
                  </B>
        </A>
       </BEFORE>
       <PULLED_OUT>
            <E id=”9” msg="get me out of here!"/>
       </PULLED_OUT>
       <AFTER>
        <A i=”1”>
                  <B i=”4”>
                        <C i=”5”>
                              <D i=”7”>
                                    <E i=”10”/>
                              </D>
                              <D i=”11”/>
                        </C>
                        <C i=”12”/>
                  </B>
        </A>
       </AFTER>
</ROOT>

Any suggestions as to how I’d go about that?

Here is an attempt with XSLT 2.0:

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  version="2.0">

  <xsl:output method="xml" indent="yes"/>
  <xsl:strip-space elements="*"/>

  <xsl:variable name="pn" select="//*[(_at_)i = '9']"/>

  <xsl:template match="/">
    <ROOT>
      <BEFORE>
        <xsl:apply-templates select="*" mode="before"/>
      </BEFORE>
      <PULLED_OUT>
        <xsl:copy-of select="$pn"/>
      </PULLED_OUT>
      <AFTER>
        <xsl:apply-templates select="*" mode="after"/>
      </AFTER>
    </ROOT>
  </xsl:template>

  <xsl:template match="*[. &gt;&gt; $pn or . is $pn]" mode="before"/>

<xsl:template match="*[. is $pn or empty(. intersect $pn/ancestor::*) and empty(. intersect $pn/following-sibling::*)]" mode="after"/>

  <xsl:template match="*" mode="before">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()" mode="before"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="*" mode="after">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()" mode="after"/>
    </xsl:copy>
  </xsl:template>

<xsl:template match="@* | text() | comment() | processing-instruction()" mode="after before">
    <xsl:copy/>
  </xsl:template>

</xsl:stylesheet>


--

        Martin Honnen
        http://JavaScript.FAQTs.com/

--~------------------------------------------------------------------
XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--